Answer : 7
Explanation :
In each diagram, the sum of the upper left and upper middle numbers is written in the center box, and the sum of the upper right and upper middle numbers is written in the lower central box.
Answer : 7
Explanation :
In each diagram, the sum of the upper left and upper middle numbers is written in the center box, and the sum of the upper right and upper middle numbers is written in the lower central box.